What's the WORST that can happen if you are CAUGHT WORKING on a tourist visa?

I think the reality is that almost ALL Digital Nomads work on tourist visas, and many don’t know that it’s usually not legal. However, acquiring work visas and all the other paperwork is just too much when you are in a new country every 3 months…

However, what are the consequences of getting caught working on a tourist visa?

And which countries have strong enforcement? And which ones have poor enforcement?